<?php

if (! defined('BASEPATH'))
    exit('No direct script access allowed');

/**
 * CodeIgniter
 *
 * An open source application development framework for PHP 5.1.6 or newer
 *
 * @package CodeIgniter
 * @author ExpressionEngine Dev Team
 * @copyright Copyright (c) 2008 - 2011, EllisLab, Inc.
 * @license http://codeigniter.com/user_guide/license.html
 * @link http://codeigniter.com
 * @since Version 1.0
 * @filesource
 *
 */
    
// ------------------------------------------------------------------------

/**
 * SQLite Utility Class
 *
 * @category Database
 * @author ExpressionEngine Dev Team
 * @link http://codeigniter.com/user_guide/database/
 */
class CI_DB_sqlite_utility extends CI_DB_utility
{

    /**
     * List databases
     *
     * I don't believe you can do a database listing with SQLite
     * since each database is its own file. I suppose we could
     * try reading a directory looking for SQLite files, but
     * that doesn't seem like a terribly good idea
     *
     * @access private
     * @return bool
     */
    function _list_databases ()
    {
        if ($this->db_debug) {
            return $this->db->display_error('db_unsuported_feature');
        }
        return array();
    }
    
    // --------------------------------------------------------------------
    
    /**
     * Optimize table query
     *
     * Is optimization even supported in SQLite?
     *
     * @access private
     * @param
     *            string the table name
     * @return object
     */
    function _optimize_table ($table)
    {
        return FALSE;
    }
    
    // --------------------------------------------------------------------
    
    /**
     * Repair table query
     *
     * Are table repairs even supported in SQLite?
     *
     * @access private
     * @param
     *            string the table name
     * @return object
     */
    function _repair_table ($table)
    {
        return FALSE;
    }
    
    // --------------------------------------------------------------------
    
    /**
     * SQLite Export
     *
     * @access private
     * @param
     *            array Preferences
     * @return mixed
     */
    function _backup ($params = array())
    {
        // Currently unsupported
        return $this->db->display_error('db_unsuported_feature');
    }
}

/* End of file sqlite_utility.php */
/* Location: ./system/database/drivers/sqlite/sqlite_utility.php */